libata: make ata_sff_data_xfer_noirq() work with 32-bit PIO

Message ID
State Not Applicable
Delegated to: David Miller
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Commit Message

Bartlomiej Zolnierkiewicz Oct. 13, 2011, 1:04 p.m.
From: Bartlomiej Zolnierkiewicz <>
Subject: [PATCH] libata: make ata_sff_data_xfer_noirq() work with 32-bit PIO

Always use ata_sff_data_xfer32() in ata_sff_data_xfer_noirq()
so the latter can be also used for host controllers supporting
32-bit PIO operations.

It is a completely safe thing to do because if 32-bit PIO is
not supported or enabled ata_sff_data_xfer32() will fallback
to a standard method.

Signed-off-by: Bartlomiej Zolnierkiewicz <>
earlier references:

 drivers/ata/libata-sff.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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Index: b/drivers/ata/libata-sff.c
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -838,7 +838,7 @@  unsigned int ata_sff_data_xfer_noirq(str
 	unsigned int consumed;
-	consumed = ata_sff_data_xfer(dev, buf, buflen, rw);
+	consumed = ata_sff_data_xfer32(dev, buf, buflen, rw);
 	return consumed;